inode_lock_nested

Name:inode_lock_nested

Proto:static inline void inode_lock_nested(struct inode *inode, unsigned subclass)

Type:void

Parameter:

Type	Parameter	Name
struct inode *	inode
unsigned	subclass

826

down_write_nested( & i_rwsem, subclass)

**Caller**
Name	Describe
SYSCALL_DEFINE1
ns_mkdir_op
ns_rmdir_op
kern_path_locked	does lookup, returns the object with parent locked
lock_rename	p1 and p2 should be directories on the same fs.
filename_create
do_rmdir
do_unlinkat	Make sure that the actual truncation of the file will occur outside its* directory's i_mutex. Truncate can take a long time if there is a lot of* writeout happening, and we don't want to prevent access to the directory* while waiting on the I/O.
lock_two_nondirectories	lock_two_nondirectories - take two i_mutexes on non-directory objects* Lock any non-NULL argument that is not a directory.* Zero, one or two objects may be locked by this function.@inode1: first inode to lock@inode2: second inode to lock

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